chilon Code

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[94f52a]: / hash.hpp Maximize Restore History

44 lines (32 with data), 786 Bytes

#ifndef CHILON_HASH_HPP
#define CHILON_HASH_HPP

#include <boost/functional/hash.hpp>

#include <vector>
#include <type_traits>

namespace chilon {

namespace detail {
    struct hashable {};

    template <class T, bool Custom>
    struct hasher : T::hash_type {};

    template <class T>
    struct hasher<T, false> : std::hash<T> {};
}

template <class T>
struct hasher
  : detail::hasher<T, std::is_base_of<detail::hashable, T>::value> {};

template <class T>
struct hasher< std::vector<T> > {
    size_t operator()(std::vector<T> const& t) const {
        return boost::hash_range(t.begin(), t.end());
    }
};

template <class T>
size_t hash(T const& t) {
    return hasher<T>()(t);
}

template <class H>
struct hashable : detail::hashable {
    typedef H hash_type;
};

}
#endif

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[94f52a]: / hash.hpp Maximize Restore History

44 lines (32 with data), 786 Bytes